It sounds just like her to me.
OK, I just sent an email to the ad agency (McGarry Bowen) and asked them. We'll see if they answer, LOL.
McGarry Bowen is a fairly new agency and this is their first contract with Kraft and its parent company. Supposedly, this is a hipper, less stodgy outfit than the war horses that usually do packaged food ads.
The whole "Kraft your summer" campaign has a $30 to $40 million dollar budget (I wonder how much Michelle got, LOL). Supposedly, the point is to emphasize the creativity of the food preparer (you, if you buy the product) in an effort to compete with the generic store brands, which are cheaper.
According to a NY Times interview with Mcgarry's senior partner,
"We tried to find people for the campaign with the spirit of innovation, to make it a celebration of individuality and creativity, who at the same time are accessible, believable, at home in the kitchen.
"That is how Mr. Glover and Ms. Kwan were selected for the commercials..."
That's my Michelle -- creative, believable, and at home in the kitchen!